Journal ArticleDOI
Unsteady Behavior of Real Gas in Wave Rotor Refrigerators
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TLDR
In this article, the main thermal separation effect and propagation speed of gas-dynamic wave of real gases are briefly studied, and numerical results have shown the large deviations between perfect gas model and real gas model for gasdynamic waves.Abstract:
Real gas effect has great impact on unsteady flow behaviors in wave rotor refrigerator (WRR). In this work, the main thermal separation effect and propagation speed of gasdynamic wave of real gases are briefly studied. Numerical results have shown the large deviations between perfect gas model and real gas model for gasdynamic waves. A corrected wave diagram of WRR has been achieved based on real gas PVT relations, through which the problem of offset design of port timing can be completely solved.read more
Citations
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The design and influence of port arrangement on an improved wave rotor refrigerator performance
TL;DR: In this paper, an analytical design procedure for the pressure exchanger refrigerator, also known as wave rotor refrigerator, was presented to afford a theoretical port arrangement of the WRR rapidly, and the analytical design results are used as initial numerical model for CFD calculation.
Journal ArticleDOI
The loss in charge process and effects on performance of wave rotor refrigerator
TL;DR: In this paper, an improved wave rotor refrigerator (WRR) cycle, which utilized the shock waves in rotor channels to recycle the expansion work during the process of refrigeration is established.
Journal ArticleDOI
Unsteady Heat Transfer Between Gas and Tube in a Wave Rotor Refrigerator
TL;DR: In this paper, the authors investigated the mechanism of the heat transfer and its effects on the performance of a wave rotor refrigerator and found that the position of the bolts, which link the wave rotor and the shaft, has a great influence on WRR gaps.
References
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Journal ArticleDOI
A New Flux Splitting Scheme
TL;DR: A new flux splitting scheme is proposed which rivals, and in some cases surpasses, that of Roe's solver in the Euler and Navier-Stokes solutions carried out in this study, and is robust and converges as fast as the Roe splitting.
Journal ArticleDOI
A Sequel to AUSM
TL;DR: AUSM+ as discussed by the authors improves the AUSM by exact resolution of 1D contact and shock discontinuities, positivity preserving of scalar quantity such as the density, free of the carbuncle phenomenon, and free of oscillations at the slowly moving shock.
Journal ArticleDOI
A Fundamental Derivative in Gasdynamics
TL;DR: In this article, the fundamental derivative has been defined as the non-dimensional form Γ≡12ρ3c4(∂2Υ/∂P2)s.
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